Electrical Control TRIZ Cases
- Engine Starting Air Bleed for Crankcase Unburned Gas Dilution
Bleeding compressed starting air into the crank chamber dilutes leaked fuel gas below the explosive limit without adding a separate safety air system.
- Engine Intake Filling Control for Cold-Start Cylinder Head Distortion
Limits intake air filling at engine start based on cylinder head temperature to suppress cold-start thermal distortion without excessive output loss.
- Fuel Emulsion Supply With Active Blending for Stable Marine Combustion
Active shearing or ultrasonic blending keeps immiscible marine fuels emulsified before injection, improving combustion stability and efficiency.
- Fuel Injection Valve Stuck-Open Detection During Engine Operation
Rotation fluctuation during fuel cut-off ignition reveals stuck-open or stuck-closed fuel injection valves while the engine is running.
- Vehicle Data Saving Control Before Ignition Turn-On
Stopping backup when ignition turn-on signs appear protects stored vehicle data without extending startup time or activation load.
- Vehicle Torque Control Using Engine Speed Target Linearization
Torque demand is mapped through engine speed targets to smooth non-linear speed changes, reducing rough operation and engine wear.
- Excavator Start-Stop Control with Independent Power Retention
Separate power and one-touch start switches with relay-diode retention give excavators flexible shutdown control, lower complexity, and safer use.
- Ignition Timing Control After Cutout for Cylinder Pressure Management
Adjusting the first post-cutout sparks helps control cylinder pressure while limiting fuel use, emissions, and muffler heat.
- Engine Bank Torque Transfer for Smooth Cylinder Deactivation
Gradual torque ramping between engine banks cuts transition shock and lowers HC, CO, and NOx during cylinder deactivation.
- Hydrogen Engine Valve Timing to Suppress Backfire Losses
Retarding the hydrogen fuel valve relative to the intake valve suppresses backfire and limits unburned fuel loss through the exhaust.
- Variable Valve Overlap for SPI Mitigation and Stoichiometric Exhaust
Valve overlap after SPI detection traps air and blends rich combustion with bypass air to restore stoichiometric exhaust and cut emissions.
- Dual-Injector Fuel Supply for Onboard Methane-Hydrogen Mixing
Separate methane and hydrogen injectors mix fuel on board, enabling ratio control from methane quality for cleaner, efficient combustion.
- Photocatalytic Liquid Composition for Stable Nanoparticle Dispersion
Dispersants and sol-gel processing keep silver and TiO2 or WO3 nanoparticles dispersed, reducing agglomeration while sustaining catalytic activity.
- Evaporation System Leak Diagnosis Using Thermal Pressure Changes
Uses tank temperature-driven pressure changes and filter-region pressure gradients to detect EVAP leaks without pumps, cutting energy use and noise.
- Turbocharger Bypass Conduit Layout for Low Back Pressure
A bypass valve and conduit reroute exhaust gas around the turbine to cut back pressure, speed spool-up, and improve two-stroke response.
- Vehicle Drive Coordination for Secondary Function Priority Control
A functional coordinator prioritizes secondary functions and sends one engine mode request to prevent conflicts and premature termination.
- Engine Cylinder Ionisation Monitoring for Water vs Knock Detection
Ionisation current phase analysis separates water in the cylinder from heavy knocking, avoiding incorrect combustion control adjustments.
- Exhaust Aftertreatment Heating via Secondary Air Valve Timing
Secondary air drawn by valve timing heats cold-start exhaust aftertreatment faster, cutting emissions without external heaters.
- Excavator Engine Coupled Start-Stop Control With Emergency Relay Backup
Separating power-on from engine start-stop enables asynchronous shutdown and emergency relay backup when the main controller fails.
- Fuel Injector Drive Current Control for Stable Half-Lift Injection
Controlled coil current reduction stabilizes half-lift valve motion, improves injection linearity, and helps cut PN emissions.
- Exhaust Aftertreatment Fault Detection via Storage-Capacity Modeling
Reaction-equation modeling uses aftertreatment storage capacity to infer downstream exhaust composition and detect faults more reliably.
- Turbocharger Compressor Temperature Modeling Under Pumping Conditions
Pressure and mass flow gradients detect compressor pumping, enabling corrected turbocharger temperature modeling for speed control and component protection.
- DPF Soot Preloading After Regeneration for Stable PM Filtration
Controlled soot preloading after DPF regeneration restores post-burn filtration efficiency and helps meet particulate number limits.
- Turbocharger Speed Control Under Intake Leak Conditions
Fused speed signals and model-based boost control limit turbocharger overspeed during intake leaks while avoiding unnecessary intervention.
- Gaseous Fuel Pressure Control for Brake Thermal Efficiency
Dynamic fuel-rail pressurization compares efficiency gains with compression energy cost to improve gaseous-engine emissions control.